CN113555402B - Display panel, preparation method thereof and display device - Google Patents
Display panel, preparation method thereof and display device Download PDFInfo
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- CN113555402B CN113555402B CN202110817727.9A CN202110817727A CN113555402B CN 113555402 B CN113555402 B CN 113555402B CN 202110817727 A CN202110817727 A CN 202110817727A CN 113555402 B CN113555402 B CN 113555402B
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- 238000002360 preparation method Methods 0.000 title abstract description 6
- 238000001514 detection method Methods 0.000 claims abstract description 51
- 239000000758 substrate Substances 0.000 claims abstract description 45
- 238000000034 method Methods 0.000 claims description 20
- 230000008569 process Effects 0.000 claims description 13
- 238000000059 patterning Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000009529 body temperature measurement Methods 0.000 abstract description 8
- 239000004065 semiconductor Substances 0.000 description 14
- 238000005538 encapsulation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 230000036760 body temperature Effects 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 239000010406 cathode material Substances 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- IPBWGTSZTNICPQ-UHFFFAOYSA-N [Se].[Cd].[Hg] Chemical compound [Se].[Cd].[Hg] IPBWGTSZTNICPQ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000005525 hole transport Effects 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- NSRBDSZKIKAZHT-UHFFFAOYSA-N tellurium zinc Chemical compound [Zn].[Te] NSRBDSZKIKAZHT-UHFFFAOYSA-N 0.000 description 1
Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/1201—Manufacture or treatment
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
Abstract
The application discloses a display panel, a preparation method thereof and a display device, and is used for enabling a display product to achieve a temperature measurement function. The embodiment of the application provides a display panel, the display panel includes: a substrate, a plurality of sub-pixels arranged in an array on the substrate, and a plurality of temperature detection units; the temperature detection unit is located between adjacent sub-pixels.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel, a preparation method thereof and a display device.
Background
At present, the non-contact temperature measurement technology is rapidly developed, and the body temperature gun becomes a faster temperature measurement tool, but the body temperature gun is not suitable for being carried about, and the larger volume and frequent charging are not beneficial to going out for carrying.
An organic light-Emitting Diode (OLED) is a device that utilizes a multi-layer organic thin film structure to produce electroluminescence. The OLED display screen has the advantages of light weight, high brightness, low power consumption, quick response, high definition, good flexibility, high luminous efficiency and the like, and can meet new requirements of consumers on display technology. More and more display manufacturers worldwide invest in research and development, and the industrialization process of the OLED is greatly promoted. However, prior art OLED displays are not capable of body temperature detection.
Disclosure of Invention
The embodiment of the application provides a display panel, a preparation method thereof and a display device, which are used for enabling a display product to realize a temperature measurement function.
The embodiment of the application provides a display panel, the display panel includes: a substrate, a plurality of sub-pixels arranged in an array on the substrate, and a plurality of temperature detection units;
the temperature detection unit is located between adjacent sub-pixels.
In some embodiments, the display panel further includes: a pixel defining layer over the substrate base;
the pixel definition layer comprises a plurality of first opening areas and a plurality of second opening areas; the second opening areas are positioned between the adjacent first opening areas;
the sub-pixel includes: an electroluminescent device located in the first opening region;
the temperature detection unit is positioned in the second opening area.
In some embodiments, an electroluminescent device comprises: a first anode, a light-emitting layer and a first cathode which are stacked;
the temperature detection unit includes: a second anode, an infrared sensor and a second cathode which are stacked;
the first anode and the second anode are arranged in the same layer, and the first cathode and the second cathode are arranged in the same layer.
In some embodiments, each second anode is integrally connected to one of the first anodes adjacent thereto.
In some embodiments, the first cathode and the second cathode are insulated from each other.
In some embodiments, the display panel further includes: a common layer;
the common layer is located between the first anode and the light emitting layer and between the second anode and the infrared sensor, and/or the common layer is located between the first cathode and the light emitting layer and between the second cathode and the infrared sensor.
In some embodiments, the subpixels include a red subpixel, a blue subpixel, and a green subpixel;
the red sub-pixel includes a red light emitting layer, the blue sub-pixel includes a blue light emitting layer, and the green sub-pixel includes a green light emitting layer;
the thickness of the red light-emitting layer is greater than that of the green light-emitting layer, and the thickness of the green light-emitting layer is greater than that of the blue light-emitting layer;
the thickness of the infrared sensor is greater than that of the blue light emitting layer, and the thickness of the infrared sensor is less than that of the red light emitting layer.
In some embodiments, the display panel further includes: a plurality of display driving circuits and a plurality of temperature detecting circuits between the substrate base and the pixel defining layer;
the display driving circuit is electrically connected with the first anode in one-to-one correspondence, and the temperature detection circuit is electrically connected with the second anode in one-to-one correspondence.
The preparation method of the display panel provided by the embodiment of the application comprises the following steps:
providing a substrate;
forming a plurality of sub-pixels and a plurality of temperature detection units on one side of a substrate; wherein the temperature detection unit is located between adjacent sub-pixels.
In some embodiments, a plurality of sub-pixels and a plurality of temperature detection units are formed on one side of a substrate base plate, specifically including:
forming an anode layer on one side of a substrate, and forming a pattern of a first anode and a pattern of a second anode by adopting patterning process;
forming a pixel defining layer, and forming a first opening area exposing the first anode and a second opening area exposing the second anode by adopting patterning process;
forming an infrared sensor on a side of the second anode facing away from the substrate;
forming a light-emitting layer on one side of the first anode, which is away from the substrate;
a pattern of the first cathode and a pattern of the second cathode are formed.
The display device provided by the embodiment of the application comprises the display panel provided by the embodiment of the application.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of another display panel according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of another display panel according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of another display panel according to an embodiment of the present disclosure;
fig. 5 is a schematic diagram of a temperature detection unit and a temperature detection circuit in a display panel according to an embodiment of the present application;
fig. 6 is a schematic flow chart of a method for manufacturing a display panel according to an embodiment of the present application;
fig. 7 is a flow chart of another method for manufacturing a display panel according to an embodiment of the present application.
According to the display panel, the manufacturing method thereof and the display device, the temperature detection units are arranged between the sub-pixels, so that the display panel can detect the temperature. Therefore, the display product comprising the display panel can be used as a temperature measuring tool to realize portability and quick temperature measurement. And, the temperature detection unit is arranged between the sub-pixels, so that the normal display function of the display panel is not affected.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present application. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present application. And embodiments and features of embodiments in this application may be combined with each other without conflict. All other embodiments, which can be made by one of ordinary skill in the art without the benefit of the present disclosure, are intended to be within the scope of the present application based on the described embodiments.
Unless otherwise defined, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
It should be noted that the dimensions and shapes of the various figures in the drawings do not reflect true proportions, and are intended to illustrate the present application only. And the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.
The embodiment of the application provides a display panel, as shown in fig. 1, the display panel includes: a substrate 1, a plurality of sub-pixels 2 arranged in an array on the substrate 1, and a plurality of temperature detection units 3;
the temperature detection unit 3 is located between adjacent sub-pixels 2.
The display panel provided by the embodiment of the application is provided with the temperature detection units among the sub-pixels, so that the display panel can detect the temperature. Therefore, the display product comprising the display panel can be used as a temperature measuring tool to realize portability and quick temperature measurement. And, the temperature detection unit is arranged between the sub-pixels, so that the normal display function of the display panel is not affected.
In some embodiments, as shown in fig. 1 and 2, the display panel further includes: a pixel defining layer 4 located over the substrate 1;
the pixel defining layer 4 includes a plurality of first opening regions 13 and a plurality of second opening regions 14; the second open areas 14 are located between adjacent first open areas 13;
the sub-pixel 2 includes: an electroluminescent device 5 located in the first opening region 13;
the temperature detection unit 3 is located in the second opening area 14.
The display panel provided by the embodiment of the application is equivalent to the arrangement of the second opening area on the pixel definition layer between the first opening areas, and the temperature detection unit is arranged in the second opening area, so that the influence on the normal display function of the display panel can be avoided, and the opening ratio and the resolution of the display panel can not be influenced.
In some embodiments, as shown in fig. 1, the electroluminescent device 5 comprises: a first anode 6, a light-emitting layer 7, and a first cathode 8 which are stacked;
the temperature detection unit 3 includes: a second anode 9, an infrared sensor 10, and a second cathode 11, which are stacked;
the first anode 6 and the second anode 9 are arranged in layers, and the first cathode 8 and the second cathode 11 are arranged in layers.
The display surface that this application embodiment provided, temperature detection unit include infrared sensor, and infrared sensor can detect the infrared ray of human transmission to can realize non-contact temperature measurement.
In particular, for example, the first anode and the second anode may be patterned first, and then the pixel defining layer may be formed, where the first opening region exposes a portion of the first anode and the second opening region exposes a portion of the second anode, that is, the front projection of the first opening region on the substrate falls within the front projection of the first anode on the substrate, and the front projection of the second opening region on the substrate falls within the front projection of the second anode on the substrate.
In some embodiments, as shown in fig. 2, each second anode 9 is integrally connected with one of the first anodes 6 adjacent thereto.
Of course, in some embodiments, the second anode and the first anode may be insulated from each other.
In some embodiments, as shown in fig. 1, the first cathode 8 and the second cathode 11 are insulated from each other.
I.e. the temperature detection unit does not share a cathode with the electroluminescent device. Therefore, the interference of heat generated by the luminous area of the electroluminescent device on the temperature detection of the infrared sensor can be prevented, and the accuracy of the temperature detection of the infrared sensor is improved.
In some embodiments, as shown in fig. 3, the display panel further includes: a common layer 20;
the common layer 20 is located between the first anode 6 and the light emitting layer 7 and between the second anode 9 and the infrared sensor 10, and/or the common layer 20 is located between the first cathode 8 and the light emitting layer 7 and between the second cathode 11 and the infrared sensor 10.
In fig. 3, the display panel includes two common layers 20 as an example. The two common layers 20 are a first common layer 21 between the first anode 6 and the light emitting layer 7 and between the second anode 9 and the infrared sensor 10, and a second common layer 22 between the first cathode 8 and the light emitting layer 7 and between the second cathode 11 and the infrared sensor 10, respectively.
In some embodiments, the first common layer includes, for example, an electron transport layer. The second common layer includes, for example: and a hole transport layer.
In some embodiments, as shown in fig. 4, the infrared sensor includes an N-type doped semiconductor layer 24 and a P-type doped semiconductor layer 23 arranged in a stack. Wherein the N-type doped semiconductor layer 24 is located on the side of the P-type doped semiconductor layer 23 facing away from the second anode 9.
Next, a temperature detection principle of the display panel provided in the embodiment of the present application is illustrated. When infrared photons are incident near PN junctions of the N-type doped semiconductor layer and the P-type doped semiconductor layer, hole electron pairs are generated, holes and electrons are separated under the action of built-in electric field force formed by the PN junction region and are collected by electrodes at the upper end and the lower end of the N-type doped semiconductor layer and the upper end and the lower end of the P-type doped semiconductor layer, namely, a second anode and a second cathode which are positioned above and below the N-type doped semiconductor layer and the P-type doped semiconductor layer are equivalent to a capacitor, and a driving chip (IC) is utilized to detect the electric charge quantity between the second anode and the second cathode, so that an optical signal is converted into an electric signal, namely, the electric signal corresponding to the temperature is obtained, and the measured temperature can be determined according to the electric signal.
In some embodiments, the material of the N-type doped semiconductor layer includes: selenium cadmium mercury (HgCdSe), tellurium zinc cadmium mercury (HgCdZnTe).
In some embodiments, the material of the P-type doped semiconductor layer includes: hgCdSe, hgCdZnTe.
In some embodiments, the subpixels include a red subpixel, a blue subpixel, and a green subpixel;
the red sub-pixel includes a red light emitting layer, the blue sub-pixel includes a blue light emitting layer, and the green sub-pixel includes a green light emitting layer;
the thickness of the red light-emitting layer is greater than that of the green light-emitting layer, and the thickness of the green light-emitting layer is greater than that of the blue light-emitting layer;
the thickness of the infrared sensor is greater than that of the blue light emitting layer, and the thickness of the infrared sensor is less than that of the red light emitting layer.
In some embodiments, as shown in fig. 2, the plurality of first light emitting regions 13 includes: red sub-pixel light emitting region 17, green sub-pixel light emitting region 18, and blue sub-pixel light emitting region 19.
In some embodiments, the infrared sensor has a thickness of 230 nanometers (nm).
In some embodiments, as shown in fig. 1, 3 and 4, the display panel further includes: and an encapsulation layer 27 on the side of the first cathode 8 and the second cathode 11 facing away from the substrate base plate 1.
In a specific implementation, the encapsulation layer includes, for example, an inorganic encapsulation layer, an organic encapsulation layer, and an inorganic encapsulation layer that are stacked.
In some embodiments, as shown in fig. 1, 3 and 4, the display panel further includes: a driving circuit layer 12 located between the substrate 1 and the pixel defining layer 4.
In some embodiments, the driving circuit layer includes: a plurality of display driving circuits and a plurality of temperature detecting circuits;
the display driving circuit is electrically connected with the first anode in one-to-one correspondence, and the temperature detection circuit is electrically connected with the second anode in one-to-one correspondence.
In particular embodiments, the display driver circuit includes, for example, a transistor and a capacitor. The temperature detection circuit may also include a transistor. In some embodiments, the transistor is a thin film transistor including a gate, a source, a drain, and an active layer.
A schematic diagram of the temperature detection circuit and the temperature detection unit is shown in FIG. 5. In some embodiments, as shown in fig. 5, the temperature detection circuit includes a first transistor T1.
In particular, the first transistor may be provided in the same layer as the transistor of the display driving circuit.
In some embodiments, as shown in fig. 5, the source of the first transistor T1 is electrically connected to the second anode 9 and the second cathode 11 is grounded.
In some embodiments, as shown in fig. 5, the driving circuit layer further includes a plurality of first signal lines 25 and a plurality of second signal lines 26 crossing each other in the horizontal and vertical directions. The first signal line 25 is electrically connected to the gate of the first transistor T1. The second signal line 26 is electrically connected to the drain of the first transistor T1.
In a specific implementation, when in the temperature detection stage, the signal transmitted through the first signal line 25 controls the first transistor to be turned on so as to collect the signal of the temperature detection unit through the second signal line, and the second signal line is electrically connected with the IC, so that the IC can determine the electric charge amount between the second anode and the second cathode according to the signal collected by the second signal line, and determine the temperature of the current detection object.
In some embodiments, a planarization layer is included between the pixel defining layer and the driving circuit layer, and as shown in fig. 2, the planarization layer includes a plurality of first vias 15 and a plurality of second vias 16. The first anode is electrically connected with a transistor in the display driving circuit through a first via hole. The second anode is electrically connected with the first transistor in the temperature detection circuit through the second via hole.
In some embodiments, the display panel further includes a buffer layer between the substrate base plate and the driving circuit layer.
Based on the same inventive concept, the embodiment of the present application further provides a method for manufacturing a display panel, as shown in fig. 6, including:
s101, providing a substrate base plate;
s102, forming a plurality of sub-pixels and a plurality of temperature detection units on one side of a substrate; wherein the temperature detection unit is located between adjacent sub-pixels.
In some embodiments, a plurality of sub-pixels and a plurality of temperature detection units are formed on one side of a substrate base plate, specifically including:
forming an anode layer on one side of a substrate, and forming a pattern of a first anode and a pattern of a second anode by adopting patterning process;
forming a pixel defining layer, and forming a first opening area exposing the first anode and a second opening area exposing the second anode by adopting patterning process;
forming an infrared sensor on a side of the second anode facing away from the substrate;
forming a light-emitting layer on one side of the first anode, which is away from the substrate;
a pattern of the first cathode and a pattern of the second cathode are formed.
In some embodiments, before forming the infrared sensor on a side of the second anode facing away from the substrate and forming the light emitting layer on a side of the first anode facing away from the substrate, further comprising:
a first common layer is formed.
In some embodiments, prior to forming the pattern of the first cathode and the pattern of the second cathode, further comprising:
a second common layer is formed.
In some embodiments, the method further includes the step of forming a driving circuit layer before forming the anode layer on one side of the substrate base plate.
Next, taking a display panel including a first common layer and a second common layer as an example, a method for manufacturing the display panel provided in the embodiments of the present application is illustrated. As shown in fig. 7, the manufacturing method of the display panel includes the steps of:
s201, providing a substrate 1, and forming a driving circuit layer 12 on one side of the substrate 1;
s202, depositing anode materials on one side of the driving circuit layer 12, which is away from the substrate 1, and forming patterns of the first anode 6 and the second anode 9 by adopting a patterning process;
in specific implementation, the patterning step comprises the steps of gluing, exposing, developing, etching and the like;
s203, depositing a material of the pixel definition layer 4, and forming a plurality of first opening areas 13 and a plurality of second opening areas 14 by adopting patterning process;
s204, forming a first common layer 21;
in specific implementation, the first common layer 21 is formed, for example, by an evaporation process;
s205, forming an infrared sensor layer 10 in the second opening region 14;
in specific implementation, for example, a Fine Metal Mask (FMM) may be used to sequentially evaporate P-type doped semiconductor material and N-type doped semiconductor material;
s206, forming a light-emitting layer 7 in the first opening region 13;
in specific implementation, for example, the FMM may be used to sequentially form light-emitting layers with different colors by using an evaporation process;
s207, forming a second common layer 22;
in specific implementation, for example, the two common layers 22 are formed by an evaporation process;
s208, forming a pattern of the first cathode 8 on a side of the light emitting layer 7 facing away from the first anode 6;
in a specific implementation, the pattern of the first cathode may be formed, for example, by vapor deposition of a cathode material using an FMM;
s209 forming a pattern of a second cathode 11 on a side of the infrared sensor layer 10 facing away from the second anode 9;
in a specific implementation, the pattern of the second cathode may be formed, for example, by vapor deposition of a cathode material using an FMM;
s210, forming an encapsulation layer 27 on a side of the first cathode 8 and the second cathode 11 facing away from the substrate 1 by using an encapsulation process.
The order of steps S208 and S209 may be changed, and the present application is not limited thereto.
The display device provided by the embodiment of the application comprises the display panel provided by the embodiment of the application.
The display device provided by the embodiment of the application is as follows: a bracelet, a mobile phone, a tablet computer, a navigator and any other product or component with a display function. Other essential components of the display device are those of ordinary skill in the art, and will not be described in detail herein, nor should they be considered as limiting the application. The implementation of the display device can be referred to the embodiment of the display panel, and the repetition is not repeated.
In summary, the display panel, the manufacturing method thereof and the display device provided by the embodiments of the present application are provided with the temperature detection unit between the sub-pixels, so that the display panel can perform temperature detection. Therefore, the display product comprising the display panel can be used as a temperature measuring tool to realize portability and quick temperature measurement. And, the temperature detection unit is arranged between the sub-pixels, so that the normal display function of the display panel is not affected.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.
Claims (8)
1. A display panel, the display panel comprising: a substrate, a plurality of sub-pixels and a plurality of temperature detection units, wherein the sub-pixels and the temperature detection units are arranged on the substrate in an array manner;
the temperature detection unit is positioned between the adjacent sub-pixels;
the display panel further includes: a pixel defining layer over the substrate base plate;
the pixel defining layer includes a plurality of first opening regions and a plurality of second opening regions; the second opening area is positioned between the adjacent first opening areas;
the sub-pixel includes: an electroluminescent device located in the first opening region;
the temperature detection unit is positioned in the second opening area;
the electroluminescent device comprises: a first anode, a light-emitting layer and a first cathode which are stacked;
the temperature detection unit includes: a second anode, an infrared sensor and a second cathode which are stacked;
the first anode and the second anode are arranged in the same layer, and the first cathode and the second cathode are arranged in the same layer;
the display panel is used as a temperature measuring tool.
2. The display panel of claim 1, wherein each of the second anodes is integrally connected with one of the first anodes adjacent thereto.
3. The display panel according to claim 1 or 2, wherein the first cathode and the second cathode are insulated from each other.
4. The display panel according to claim 1 or 2, wherein the display panel further comprises: a common layer;
the common layer is located between the first anode and the light emitting layer and between the second anode and the infrared sensor, and/or the common layer is located between the first cathode and the light emitting layer and between the second cathode and the infrared sensor.
5. The display panel of claim 1, wherein the subpixels comprise a red subpixel, a blue subpixel, and a green subpixel;
the red sub-pixel includes a red light emitting layer, the blue sub-pixel includes a blue light emitting layer, and the green sub-pixel includes a green light emitting layer;
the thickness of the red light emitting layer is greater than the thickness of the green light emitting layer, and the thickness of the green light emitting layer is greater than the thickness of the blue light emitting layer;
the thickness of the infrared sensor is greater than that of the blue light emitting layer, and the thickness of the infrared sensor is less than that of the red light emitting layer.
6. The display panel of claim 1, further comprising: a plurality of display driving circuits and a plurality of temperature detecting circuits between the substrate base and the pixel defining layer;
the display driving circuit is electrically connected with the first anodes in a one-to-one correspondence manner, and the temperature detection circuit is electrically connected with the second anodes in a one-to-one correspondence manner.
7. A method for manufacturing a display panel, the method comprising:
providing a substrate;
forming a plurality of sub-pixels and a plurality of temperature detection units on one side of the substrate; wherein the temperature detection unit is positioned between adjacent sub-pixels;
forming a plurality of sub-pixels and a plurality of temperature detection units on one side of the substrate base plate specifically includes:
forming an anode layer on one side of the substrate base plate, and forming a pattern of a first anode and a pattern of a second anode by adopting a patterning process;
forming a pixel defining layer, and forming a first opening area exposing the first anode and a second opening area exposing the second anode by adopting patterning process;
forming an infrared sensor on a side of the second anode facing away from the substrate base plate;
forming a light-emitting layer on one side of the first anode, which is away from the substrate;
a pattern of the first cathode and a pattern of the second cathode are formed.
8. A display device comprising the display panel according to any one of claims 1 to 6.
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| CN202110817727.9A CN113555402B (en) | 2021-07-20 | 2021-07-20 | Display panel, preparation method thereof and display device |
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| CN202110817727.9A CN113555402B (en) | 2021-07-20 | 2021-07-20 | Display panel, preparation method thereof and display device |
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| CN113555402B true CN113555402B (en) | 2024-02-23 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011242567A (en) * | 2010-05-18 | 2011-12-01 | Seiko Epson Corp | Method for driving electrophoretic display device, electrophoretic display device, control circuit for electrophoretic display device, and electronic apparatus |
| KR20140143638A (en) * | 2013-06-07 | 2014-12-17 | 삼성디스플레이 주식회사 | Flexible display apparatus and controlling method thereof |
| CN111312767A (en) * | 2020-02-21 | 2020-06-19 | 京东方科技集团股份有限公司 | Display substrate and display device |
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| JP2007148369A (en) * | 2005-10-31 | 2007-06-14 | Toshiba Matsushita Display Technology Co Ltd | Display control circuit, display control method, and display circuit |
| WO2015194586A1 (en) * | 2014-06-19 | 2015-12-23 | シャープ株式会社 | Organic el display device, and method for driving organic el display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2011242567A (en) * | 2010-05-18 | 2011-12-01 | Seiko Epson Corp | Method for driving electrophoretic display device, electrophoretic display device, control circuit for electrophoretic display device, and electronic apparatus |
| KR20140143638A (en) * | 2013-06-07 | 2014-12-17 | 삼성디스플레이 주식회사 | Flexible display apparatus and controlling method thereof |
| CN111312767A (en) * | 2020-02-21 | 2020-06-19 | 京东方科技集团股份有限公司 | Display substrate and display device |
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